Automatic aquarium water changer



FIG. 1 is a front, right and bottom perspective view of an automatic aquarium water changer showing my design.

FIG. 2 is a front elevation view thereof.

FIG. 3 is a rear elevation view thereof.

FIG. 4 is a left-side elevation view thereof.

FIG. 5 is a right-side elevation view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines are included for the purposes of illustrating portions of the automatic aquarium water changer that form no part of the claimed design. 

CLAIM The ornamental design for an automatic aquarium water changer, as shown and described. 